Oh boy rofl
dude, go take a test, if you've missed your period already then it's not too soon, stop worrying about it and be mature and go buy yourself a test, it's easy! Then you'll get your answer, yes or no and you'll stop worrying about it.
Also, if you and your boyfriend aren't ready for a baby, I suggest either a. Stop having sex, or b. Using a condom & other types of birth control, if you know you arent ready for a baby, and then just dont use a condom "because" then that's pretty dumb, and it's asking to have a baby.
Be smart. Use protection. Be happy.